'temperature-controllable' originates from the combination of 'temperature' and 'controllable', where 'temperature' refers to the degree of heat present in a substance or object, and 'controllable' means capable of being directed or regulated.

'temperature' comes from the Latin word 'temperatura', and 'controllable' is derived from the Old French 'contreroller', which means to check or regulate.

Initially, 'temperature' referred to the balance of humors in the body, but over time it evolved to mean the degree of heat, while 'controllable' has maintained its meaning of being able to be directed or regulated.